import json
import re
import time

import requests

# 调取网页信息
def get_one_page(url):
    headers = {
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36'
    }
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        return response.text
    return None

# 提取关键信息
def parse_one_page(html):
    pattern = re.compile(
        '<dd>.*?board-index.*?>(.*?)</i>.*?data-src="(.*?)".*?name.*?a.*?>(.*?)</a>.*?star.*?>(.*?)</p>.*?releasetime.*?>(.*?)</p>.*?integer.*?>(.*?)</i>.*?fraction.*?>(.*?)</i>.*?</dd>', re.S)
    items = re.findall(pattern, html)
    for item in items:
        yield {
            'index':item[0],
            'image':item[1],
            'title':item[2],
            'actor':item[3].strip()[3:],
            'time' :item[4].strip()[5:],
            'score':item[5]
        }

# 另存到文件中
def write_to_file(content):
    with open('result.txt', 'a', encoding='utf-8')as f:
        print(type(json.dumps(content)))
        f.write(json.dumps(content, ensure_ascii=False)+'\n')

def main(offset):
    url = 'https://maoyan.com/board/4?offset=' + str(offset)
    html = get_one_page(url)
    #print(html)
    for item in parse_one_page(html):
        write_to_file(item)

if __name__ == '__main__':
    for i in range(10):
        main(offset = i * 10)
        time.sleep(1)